<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="js/vue.js"></script>
    <title>Document</title>
    <style>
        .line{
            text-decoration: line-through;
        }
        .size{
            font-size: 20px;
        }
    </style>
</head>

<body>

    <div id="box">
        <div v-bind:class="[{line:isLine},sizeClass]">Vue.js样式绑定</div>
    </div>
    <script>
        var app=new Vue(
            {
                el:'#box',
                data:{
                    isLine:true,
                    sizeClass:'size'
                }
            }
        )
    </script>
</body>

</html>